Manufacturing method of endless metal belt and manufacturing apparatus of endless metal belt

A manufacturing apparatus of an endless metal belt having metal rings built up and differing in circumference, comprising:

• a first circumference correction section expanding each of the metal rings;
• and
• a second circumference correction section expanding each of the metal rings after conducting a solution heat treatment to the expanded metal ring, wherein
• by using the first circumference correction section and the second circumference correction section before and after the solution heat treatment, respectively, an expansion quantity for setting a circumference of each of the metal rings to become a predetermined length is attained.

A manufacturing apparatus of an endless metal belt having metal rings built up and differing in circumference, comprising:

• first circumference correction means for expanding each of the metal rings;
• and
• second circumference correction means for expanding each of the metal rings after conducting a solution heat treatment to the expanded metal ring, wherein
• by using the first circumference correction means and the second circumference correction means before and after the solution heat treatment, respectively, an expansion quantity for setting a circumference of each of the metal rings to become a predetermined length is attained.